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-rwxr-xr-xlibcpu/arm/at91sam926x/at91sam926x.h3
-rwxr-xr-xlibcpu/arm/at91sam926x/serial.c282
-rwxr-xr-xlibcpu/arm/at91sam926x/serial.h76
3 files changed, 2 insertions, 359 deletions
diff --git a/libcpu/arm/at91sam926x/at91sam926x.h b/libcpu/arm/at91sam926x/at91sam926x.h
index 8f164edb1b..2301140d24 100755
--- a/libcpu/arm/at91sam926x/at91sam926x.h
+++ b/libcpu/arm/at91sam926x/at91sam926x.h
@@ -95,7 +95,8 @@ extern "C" {
#define AT91SAM9260_BASE_TC4 0xfffdc040
#define AT91SAM9260_BASE_TC5 0xfffdc080
#define AT91SAM9260_BASE_ADC 0xfffe0000
-#define AT91_BASE_SYS 0xffffe800
+#define AT91_BASE_SYS 0xffffe800
+#define AT91SAM9260_BASE_DBGU 0xfffff200
/*
* System Peripherals (offset from AT91_BASE_SYS)
diff --git a/libcpu/arm/at91sam926x/serial.c b/libcpu/arm/at91sam926x/serial.c
deleted file mode 100755
index a5136f5d10..0000000000
--- a/libcpu/arm/at91sam926x/serial.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * File : serial.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006, RT-Thread Development Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://openlab.rt-thread.com/license/LICENSE
- *
- * Change Logs:
- * Date Author Notes
- * 2011-01-13 weety first version
- */
-
-#include <rtthread.h>
-
-#include "serial.h"
-
-/**
- * @addtogroup AT91SAM926X
- */
-/*@{*/
-
-/* RT-Thread Device Interface */
-/**
- * This function initializes serial
- */
-static rt_err_t rt_serial_init (rt_device_t dev)
-{
- struct serial_device* uart = (struct serial_device*) dev->user_data;
-
- if (!(dev->flag & RT_DEVICE_FLAG_ACTIVATED))
- {
-
- if (dev->flag & RT_DEVICE_FLAG_INT_RX)
- {
- rt_memset(uart->int_rx->rx_buffer, 0,
- sizeof(uart->int_rx->rx_buffer));
- uart->int_rx->read_index = uart->int_rx->save_index = 0;
- }
-
- if (dev->flag & RT_DEVICE_FLAG_INT_TX)
- {
- rt_memset(uart->int_tx->tx_buffer, 0,
- sizeof(uart->int_tx->tx_buffer));
- uart->int_tx->write_index = uart->int_tx->save_index = 0;
- }
-
- dev->flag |= RT_DEVICE_FLAG_ACTIVATED;
- }
-
- return RT_EOK;
-}
-
-/* save a char to serial buffer */
-static void rt_serial_savechar(struct serial_device* uart, char ch)
-{
- rt_base_t level;
-
- /* disable interrupt */
- level = rt_hw_interrupt_disable();
-
- uart->int_rx->rx_buffer[uart->int_rx->save_index] = ch;
- uart->int_rx->save_index ++;
- if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->save_index = 0;
-
- /* if the next position is read index, discard this 'read char' */
- if (uart->int_rx->save_index == uart->int_rx->read_index)
- {
- uart->int_rx->read_index ++;
- if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->read_index = 0;
- }
-
- /* enable interrupt */
- rt_hw_interrupt_enable(level);
-}
-
-static rt_err_t rt_serial_open(rt_device_t dev, rt_uint16_t oflag)
-{
- RT_ASSERT(dev != RT_NULL);
-
- return RT_EOK;
-}
-
-static rt_err_t rt_serial_close(rt_device_t dev)
-{
- RT_ASSERT(dev != RT_NULL);
-
- return RT_EOK;
-}
-
-static rt_size_t rt_serial_read (rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
-{
- rt_uint8_t* ptr;
- rt_err_t err_code;
- struct serial_device* uart;
-
- ptr = buffer;
- err_code = RT_EOK;
- uart = (struct serial_device*)dev->user_data;
-
- if (dev->flag & RT_DEVICE_FLAG_INT_RX)
- {
- rt_base_t level;
-
- /* interrupt mode Rx */
- while (size)
- {
- if (uart->int_rx->read_index != uart->int_rx->save_index)
- {
- *ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index];
- size --;
-
- /* disable interrupt */
- level = rt_hw_interrupt_disable();
-
- uart->int_rx->read_index ++;
- if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->read_index = 0;
-
- /* enable interrupt */
- rt_hw_interrupt_enable(level);
- }
- else
- {
- /* set error code */
- err_code = -RT_EEMPTY;
- break;
- }
- }
- }
- else
- {
- /* polling mode */
- while ((rt_uint32_t)ptr - (rt_uint32_t)buffer < size)
- {
- while (uart->uart_device->USART_CSR & RXRDY)
- {
- *ptr = uart->uart_device->USART_RHR & 0xff;
- ptr ++;
- }
- }
- }
-
- /* set error code */
- rt_set_errno(err_code);
- return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-}
-
-static rt_size_t rt_serial_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
-{
- rt_uint8_t* ptr;
- rt_err_t err_code;
- struct serial_device* uart;
-
- err_code = RT_EOK;
- ptr = (rt_uint8_t*)buffer;
- uart = (struct serial_device*)dev->user_data;
-
- if (dev->flag & RT_DEVICE_FLAG_INT_TX)
- {
- /* interrupt mode Tx */
- while (uart->int_tx->save_index != uart->int_tx->write_index)
- {
- /* save on tx buffer */
- uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++;
-
- -- size;
-
- /* move to next position */
- uart->int_tx->save_index ++;
-
- /* wrap save index */
- if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE)
- uart->int_tx->save_index = 0;
- }
-
- /* set error code */
- if (size > 0)
- err_code = -RT_EFULL;
- }
- else
- {
- /* polling mode */
- while (size)
- {
- /*
- * to be polite with serial console add a line feed
- * to the carriage return character
- */
- if (*ptr == '\n' && (dev->flag & RT_DEVICE_FLAG_STREAM))
- {
- while (!(uart->uart_device->USART_CSR & TXRDY));
- uart->uart_device->USART_THR = '\r';
- }
-
- while (!(uart->uart_device->USART_CSR & TXRDY));
- uart->uart_device->USART_THR = (*ptr & 0xFF);
-
- ++ptr; --size;
- }
- }
-
- /* set error code */
- rt_set_errno(err_code);
-
- return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-}
-
-static rt_err_t rt_serial_control (rt_device_t dev, rt_uint8_t cmd, void *args)
-{
- RT_ASSERT(dev != RT_NULL);
-
- switch (cmd)
- {
- case RT_DEVICE_CTRL_SUSPEND:
- /* suspend device */
- dev->flag |= RT_DEVICE_FLAG_SUSPENDED;
- break;
-
- case RT_DEVICE_CTRL_RESUME:
- /* resume device */
- dev->flag &= ~RT_DEVICE_FLAG_SUSPENDED;
- break;
- }
-
- return RT_EOK;
-}
-
-/*
- * serial register
- */
-rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial)
-{
- RT_ASSERT(device != RT_NULL);
-
- device->type = RT_Device_Class_Char;
- device->rx_indicate = RT_NULL;
- device->tx_complete = RT_NULL;
- device->init = rt_serial_init;
- device->open = rt_serial_open;
- device->close = rt_serial_close;
- device->read = rt_serial_read;
- device->write = rt_serial_write;
- device->control = rt_serial_control;
- device->user_data = serial;
-
- /* register a character device */
- return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | flag);
-}
-
-/* ISR for serial interrupt */
-void rt_hw_serial_isr(rt_device_t device)
-{
- struct serial_device* uart = (struct serial_device*) device->user_data;
-
- /* interrupt mode receive */
- RT_ASSERT(device->flag & RT_DEVICE_FLAG_INT_RX);
-
- /* save on rx buffer */
- while (uart->uart_device->USART_CSR & RXRDY)
- {
- rt_serial_savechar(uart, uart->uart_device->USART_RHR & 0xff);
- }
-
- /* invoke callback */
- if (device->rx_indicate != RT_NULL)
- {
- rt_size_t rx_length;
-
- /* get rx length */
- rx_length = uart->int_rx->read_index > uart->int_rx->save_index ?
- UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index :
- uart->int_rx->save_index - uart->int_rx->read_index;
-
- device->rx_indicate(device, rx_length);
- }
-}
-
-/*@}*/
diff --git a/libcpu/arm/at91sam926x/serial.h b/libcpu/arm/at91sam926x/serial.h
deleted file mode 100755
index 67f6d3c659..0000000000
--- a/libcpu/arm/at91sam926x/serial.h
+++ /dev/null
@@ -1,76 +0,0 @@
-#ifndef __RT_HW_SERIAL_H__
-#define __RT_HW_SERIAL_H__
-
-#include <rthw.h>
-#include <rtthread.h>
-
-#include "at91sam926x.h"
-
-#define RXRDY 0x01
-#define TXRDY (1 << 1)
-#define BPS 115200 /* serial baudrate */
-
-#define UART_RX_BUFFER_SIZE 64
-#define UART_TX_BUFFER_SIZE 64
-
-struct serial_int_rx
-{
- rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
- rt_uint32_t read_index, save_index;
-};
-
-struct serial_int_tx
-{
- rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
- rt_uint32_t write_index, save_index;
-};
-
-typedef struct uartport
-{
-/* USART register offsets */
- volatile rt_uint32_t USART_CR;
- volatile rt_uint32_t USART_MR;
- volatile rt_uint32_t USART_IER;
- volatile rt_uint32_t USART_IDR;
- volatile rt_uint32_t USART_IMR;
- volatile rt_uint32_t USART_CSR;
- volatile rt_uint32_t USART_RHR;
- volatile rt_uint32_t USART_THR;
- volatile rt_uint32_t USART_BRGR;
- volatile rt_uint32_t USART_RTOR;
- volatile rt_uint32_t USART_TTGR;
- volatile rt_uint32_t reseverd0[5];
- volatile rt_uint32_t USART_FIDI;
- volatile rt_uint32_t USART_NER;
- volatile rt_uint32_t USART_XXR;
- volatile rt_uint32_t USART_IFR;
- volatile rt_uint32_t reserved1[44];
- volatile rt_uint32_t USART_RPR;
- volatile rt_uint32_t USART_RCR;
- volatile rt_uint32_t USART_TPR;
- volatile rt_uint32_t USART_TCR;
- volatile rt_uint32_t USART_RNPR;
- volatile rt_uint32_t USART_RNCR;
- volatile rt_uint32_t USART_TNPR;
- volatile rt_uint32_t USART_TNCR;
- volatile rt_uint32_t USART_PTCR;
- volatile rt_uint32_t USART_PTSR;
-}uartport;
-
-
-struct serial_device
-{
- uartport* uart_device;
-
- /* rx structure */
- struct serial_int_rx* int_rx;
-
- /* tx structure */
- struct serial_int_tx* int_tx;
-};
-
-rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
-
-void rt_hw_serial_isr(rt_device_t device);
-
-#endif
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